606 results about "Carbon substrate" patented technology

The application provides a cement-based zinc ion hybrid capacitor, a preparation method thereof and application of the capacitor in an energy storage device. The cement-based zinc ion hybrid capacitor comprises an active carbon positive electrode, a zinc foil negative electrode and a composite air-entraining mortar interlayer arranged between the two electrodes. The active carbon positive electrode is active carbon loaded on a carrier with good conductivity, and the carrier is any one of carbon-based materials such as carbon felt, carbon fiber and graphite plate or any one of foils, meshes and foams of metals such as stainless steel, copper, titanium and nickel and alloys thereof. The composite air-entraining mortar interlayer between the two electrodes is immersed in an electrolyte under negative pressure. The composite air-entraining mortar has interconnected pores, and ions are transmitted through the electrolyte in the pores and participate in electrode reactions. The application mainly provides a porous cement-based solid electrolyte based on a composite air-entraining technology and a structural electrochemical energy storage device, and the structural energy storage device can simultaneously have good energy storage characteristics and mechanical properties.

The invention discloses a method for preparing an ultrahigh-temperature ceramic coating by an ultrahigh-temperature metal gas source based on a molten salt medium, which comprises the following steps of: mixing low-melting-point salt A, metal fluoride and metal M to obtain a mixture C, putting the mixture C into a first crucible, mixing low-melting-point salt B and metal M to obtain a mixture D, putting the mixture D into a second crucible, putting a carbon base material into a deposition furnace, and performing vacuum drying to obtain the ultrahigh-temperature ceramic coating. Heating the first crucible to melt the mixture C to obtain a melt E, and heating the second crucible to melt the mixture D to obtain a melt F; carrier gas is guided into the first crucible, the carrier gas flow passes through the melt E to form gas flow containing a metal gas source, the gas flow containing the metal gas source is guided into the second crucible, and the gas flow containing the metal gas source is filtered by the melt F in the second crucible to form a pure metal reaction gas source, and finally, a pure metal reaction gas source is introduced into the deposition furnace for deposition of the carbon base material, and the ultra-high-temperature ceramic coating is obtained. The method is easy to operate and low in cost.

The invention provides a composite photo-thermal hydrogel for seawater desalination and a preparation method and application thereof, the hydrogel has a structural unit of a structure as shown in a formula I. COF with photo-thermal performance is compounded with the hydrogel, and the hydrogel has a three-dimensional long-range ordered pore structure to promote transmission of water molecules; and the COF dispersed in the material contains porphyrin and a C = N double-bond connection structure, so that the material has excellent photothermal conversion efficiency. Therefore, under the irradiation of sunlight, the composite photo-thermal hydrogel disclosed by the invention can realize photo-thermal conversion to realize seawater evaporation, the seawater evaporation rate reaches 3.6 kgm <-1 > h <-1 >, and the performance is improved by about 3 times compared with that of a traditional carbon-based material. According to the preparation method of the composite photo-thermal hydrogel, large and complex equipment is not involved in the preparation method, the preparation technological process is simple, and industrial large-scale production is facilitated; and the reaction temperature in the preparation process is low, the energy consumption is also reduced, and the cost advantage is remarkable.

The invention provides a preparation method of an iron and nitrogen co-doped biomass-based carbon material, which can be applied to the technical fields of environmental functional materials and advanced oxidation. The preparation method comprises the following steps: obtaining target charcoal precursor powder; mixing the charcoal precursor powder with soluble ferric salt and urea to form initial mixed powder, adding water into the initial powder, and drying after water bath to obtain mixed powder; and heating and calcining the mixed powder according to preset process parameters to obtain the iron and nitrogen co-doped biomass-based carbon material. The prepared iron and nitrogen co-doped biomass-based carbon material FeOx has a high specific surface area and a rich pore structure, FeOx is uniformly dispersed on a nitrogen-doped carbon substrate, ozone catalytic activity and electron conduction performance are improved, and reactive oxygen species (ROS) can be efficiently generated to degrade sulfamethoxazole.

The invention discloses a surface oxidation monatomic nano-alloy catalyst as well as a preparation method and application thereof, and belongs to the technical field of advanced nano-energy materials and electro-catalysis. A surface-oxidized monatomic nano-alloy catalyst comprises a hydroxylated carbon nanotube carrier and bimetallic nano-alloy particles loaded on the hydroxylated carbon nanotube carrier, in the bimetallic nano-alloy particles, non-noble metal elements are dispersed in noble metal nano-particles in a monatomic form, the size of the bimetallic nano-alloy particles is 3-4 nm, and the surface-oxidized monatomic nano-alloy catalyst is prepared from a surface-oxidized monatomic nano-alloy catalyst. An oxide layer with the thickness of 0.3-0.6 nm is arranged on the surface of the bimetallic nano-alloy particle; the loading amount of the noble metal is 5-15wt%. Ruthenium and other non-noble metal elements are alloyed and anchored on the carbon material substrate, the conductivity of the catalyst can be greatly improved, the size of alloy particles is accurately controlled within the range of 3-4 nm, active sites can be exposed to the maximum extent, and structural stability is considered.

The invention provides a polyurethane composite material and application thereof, and relates to the technical field of polyurethane materials. The polyurethane composite material consists of a component A and a component B, the component A comprises the following raw material components in parts by weight: 100 parts of polymer dihydric alcohol, 1-8 parts of a chain extender, 1-3 parts of a catalyst, 0-5 parts of a cross-linking agent, 0.1-2 parts of a carbon-based material, 1-10 parts of an anthraquinone compound and 0.5-2 parts of water; and the component B is an isocyanate curing agent and comprises a prepolymer with a plurality of ester bonds and urea bonds. The polyurethane composite material disclosed by the invention has relatively high mechanical strength, wear resistance and the like, and is suitable for treating nitrogen-containing sewage.

A ceramic component included in a plasma etching apparatus, wherein a surface of the ceramic component may include a base material and a composite material disposed in contact with the base material, wherein a resistivity of the ceramic component may be 10−1 Ω·cm to 20 Ω·cm, and wherein the base material may include a first boron carbide-based material and the composite material may include at least one selected from the group consisting of a second boron carbide-based material, a carbon-based material, and combinations thereof, is disclosed.

The application provides a preparation method of a self-coiled structure molybdenum disulfide / nitrogen-doped porous carbon composite material, a product and application, high-content nitrogen-doped porous carbon material is synthesized by inducing dicyandiamide molecules to undergo a supramolecular self-assembly process, and on this basis, a hydrothermal reaction is carried out to coat molybdenum sulfide sheet layer material on the surface, and finally, a self-heating coiling treatment is carried out to form a carbon-based electrocatalyst of the self-coiled structure molybdenum disulfide / nitrogen-doped porous carbon. Compared with a high specific surface area carbon-based catalyst, high doping concentration of nitrogen atoms can provide more electron-rich properties to facilitate the adsorption of substances, and the self-coiled carbon-based material can exhibit very excellent electrochemical performance, especially in the aspect of electrochemical hydrogen production. The preparation method is simple in operation, low in preparation cost and suitable for large-scale production.

Battery cell, including: a case; and an electrode assembly located inside the housing, wherein the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator film, the separator film being arranged between the positive and the negative electrode plates, where The negative electrode plate comprises a negative electrode current collector and a negative electrode film layer located on at least one side of the negative electrode current collector. The negative electrode film layer comprises an active material of the negative electrode. The negative electrode film layer comprises a first negative electrode film layer located away from the negative electrode current collector and a second negative electrode film layer located near the negative electrode current collector. The first negative electrode film layer comprises a first active material of the negative electrode, and the second negative electrode film layer comprises a second active material of the negative electrode.The first active material of the negative electrode contains a silicon-based material and a carbon-based material, the second active material of the negative electrode contains a carbon-based material, and the mass fraction of the silicon element in the negative electrode film layer is 0.5% to 6%. The separator film comprises a base film, a first porous coating on the side of the base film facing the negative electrode plate, and a second porous coating on the side of the base film facing the positive electrode plate. Both the first and second porous coatings contain filler particles.

The invention relates to the field of energy storage batteries, in particular to a surface modification method of a carbon-based negative electrode material for a lithium ion battery and the carbon-based negative electrode material.The surface modification method comprises the following steps that S1, the carbon-based material, soluble saccharides, a lithium source and a solvent are mixed; s2, carrying out ball milling treatment on the slurry to obtain a precursor mixture; s3, calcining the precursor mixture to obtain a primary modified carbon material; s4, treating the primary modified carbon material in ozone to obtain an oxidation modified carbon material; and S5, dispersing the oxidation modified carbon material in a solution containing a conductive monomer and an oxidizing agent for chemical polymerization reaction, and depositing on the surface of the carbon material to form a polymer coating layer, thereby obtaining the surface modified carbon-based negative electrode material. By constructing a pre-lithiated carbon coated inner core and an ozone activation interface and preparing a modification layer of a conductive polymer, the core problems that a traditional carbon negative electrode is low in first efficiency, short in cycle life and poor in rate capability and is difficult to consider at the same time are solved.

The invention relates to the technical field of artware processing, in particular to an intelligent regulation and control system and method for carbon carving cinnabar painting, and the system comprises a pretreatment module, a spraying module, a detection module and a control module. The pretreatment module is used for sequentially carrying out sand blasting, cleaning and drying treatment on the target drawing surface of the carbon plate; the spraying module completes spraying according to preset parameters; the detection module obtains a spraying surface image and a bonding strength parameter; the control module judges whether the spraying of the carbon plate meets the standard or not according to the brightness characteristic value of the pre-spraying area, and additionally judges on the basis of the curing duration difference value; and if not, determining the reason that the spraying of the carbon plate does not meet the standard according to the mean value of the bonding strength. According to the intelligent regulation and control system, the problem that color difference exists when cinnabar is sprayed on the surface of a carbon carving product due to orientation of a carbon base material is solved, and the painting effect of spraying is improved.

The application provides a secondary battery and an electric device, the secondary battery comprising a negative electrode sheet, the negative electrode sheet comprising a negative electrode current collector and a negative electrode film layer on at least one surface of the negative electrode current collector, the negative electrode film layer comprising a negative electrode active material, the negative electrode active material comprising a first carbon-based material and a second carbon-based material, the first carbon-based material comprising artificial graphite secondary particles, the second carbon-based material comprising an outer region and an inner region inside the outer region, the outer region being a region extending from the surface of the particles of the second carbon-based material to the interior of the particles by a distance of 2.5 μm, in a cross-sectional view of the second carbon-based material, the total pore area of the outer region being denoted as S1, the total pore area of the inner region being denoted as S2, and S2>S1. The application can improve the cycle performance of the secondary battery.

Battery cell comprising an electrode arrangement and an electrolyte, wherein the electrode arrangement comprises a positive electrode sheet, a negative electrode sheet and a separator, wherein the separator is located between the positive electrode sheet and the negative electrode sheet, wherein The positive electrode sheet comprises a positive electrode current collection section and a positive electrode film layer arranged on at least one surface of the positive electrode current collection section along the thickness direction of the positive electrode sheet and containing a positive electrode active material, wherein the positive electrode active material comprises a lithium-containing phosphate with an olivine structure, and the one-sided coating weight of the positive electrode film layer is 200 mg / 1540.25 mm². 2 up to 370 mg / 1540.25 mm 2 amounts, the negative electrode sheet comprises a negative electrode current collection section and a negative electrode film layer arranged on at least one surface of the negative electrode current collection section along the thickness direction of the negative electrode sheet and containing a negative electrode active material, wherein the negative electrode active material comprises a carbon-based material, the conductivity of the electrolyte at room temperature is 13 mS / cm to 20 mS / cm, The battery cell, in an external environment of 25 °C, during a discharge process from a state of charge of 100% with a constant current of 0.33 C-rate to 2.0 V, exhibits a discharge platform voltage V1, where V1 is between 3.19 V and 3.235 V.

The application provides a carbon-based material and a preparation method and application thereof, and a uranium-containing wastewater purification method, and relates to the technical field of water treatment.The carbon-based material comprises a carbon base and nano zero-valent iron particles filled in the pores of the carbon base and loaded on the surface of the carbon base.By doping the nano zero-valent iron in the carbon base and loading the nano zero-valent iron particles on the surface of the carbon base, the carbon-based material can increase the diffusion of the nano zero-valent iron particles, effectively prevent the defects of agglomeration and oxidation of the nano zero-valent iron particles, and improve the stability of the nano zero-valent iron particles in the carbon-based material.The carbon-based material is applied to the purification of uranium-containing wastewater, has excellent removal effect on uranium ions, and has no toxicity, corrosiveness and radioactivity in the recycling process of the carbon-based material, so that secondary pollution is avoided.

The present application provides a transition metal single atom carbon-based catalyst, characterized by comprising a transition metal single atom, a nitrogen-doped carbon substrate and an oxygen-doped carbon substrate, and the carbon-based catalyst comprises a 4-coordination structure unit M-N4 structure and a 5-coordination structure unit M-N2O3 structure of the transition metal single atom in the structure of the carbon-based catalyst. The carbon-based catalyst also has high conductivity, and the existence of the two coordination structures can synergistically catalyze the oxidative dehydrogenation of organic matter and the efficient reduction of hydrogen peroxide and oxygen to generate hydroxyl radicals and superoxide radical active species. The synergistic oxidation of the two free radicals on the organic matter in water can significantly improve the mineralization degree of the organic pollutants, thereby efficiently catalyzing the degradation of the organic pollutants in water. The present application also provides a method for preparing the carbon-based catalyst.

The invention discloses a curcumin ion-based composite material for cobalt separation, a preparation method and application, the material is prepared by compounding curcumin ionic liquid and a porous material, and the porous material is a carbon-based material, an inorganic porous material or a resin material. The problem that efficient separation of Co in wastewater cannot be achieved in the prior art is solved. Compared with the prior art, amino acid modified curcumin is introduced into the ionic liquid as anions for the first time and is loaded on the porous material, and the prepared composite material can quickly and specifically adsorb Co metal ions and can be prepared into a membrane or column separation resin so as to recover cobalt from waste power batteries and remove cobalt from radioactive wastewater. The adsorption rate is high, desorption is not prone to occurring, the capture capacity and capture rate are high, and recycling can be achieved.

This invention relates to the field of batteries and provides a battery in which the positive electrode active material contains aluminum and exhibits a bimodal particle size distribution, with the two peaks corresponding to particle sizes F1 and F2, respectively, in μm; F1 < F2; the negative electrode active material contains silicon-based and carbon-based materials; the battery satisfies the following relationship: (Ac / 400-1000 / (5×F1+2×F2))+(σ-(Ws+1)×(F3+50) / 2)≥407; where Ac is the mass content of aluminum in the positive electrode active material, in ppm; Ws is the mass content of silicon in the negative electrode active material; F3 is the particle size corresponding to the highest peak in the volume particle size distribution curve of the negative electrode active material, in μm; and σ is the fracture strength of the negative electrode current collector, in MPa. The battery of this invention has high energy density, as well as good cycle stability and electrochemical performance.

A zinc (Zn) ion hybrid supercapacitor (ZIHSC) in the form of an electrochemical cell includes a Zn nanosheets electrodeposited metal substrate (Zn ED-MS) as an anode, and a jute activated carbon coated conductive carbon substrate (the JAC-CCS) as a cathode, an electrolyte including an aqueous solution of Zn salt at a concentration of 0.05 to 5 molars (M), and a membrane as a separator.

This invention discloses a silicon-carbon composite anode material, its preparation method, and a lithium battery prepared using ALD and CVD technologies. The method includes: growing a first metal oxide on the surface of a carbon substrate using ALD atomic layer deposition; reducing the first metal oxide on the surface of the carbon substrate to metal-containing nanodots in a reaction chamber; heating the carbon substrate with the nanodots in a reactor and injecting a gas mixture containing silane and an inert gas; growing silicon nanowires on the nanodots using a silane CVD pyrolysis process; heating the carbon substrate with the grown silicon nanowires in a reactor and injecting hydrocarbon gas; and coating the surface of the silicon nanowires with a carbon layer using a CVD pyrolysis process to obtain the silicon-carbon composite anode material. This method effectively prevents the volume expansion of silicon nanowires during charge and discharge, improving the cycle performance of the silicon-carbon composite anode material.

The invention provides a conductive backboard, a preparation method thereof and a photovoltaic module. The conductive backboard comprises a supporting layer, a conductive layer and an insulating layer which are stacked in sequence, the conductive layer comprises a conductive circuit area, the conductive circuit area comprises a conductive material, and the conductive material is a conductive adhesive and / or a conductive coating; the conductive material comprises the following components in parts by weight: 20-40 parts of matrix resin, 50-80 parts of conductive filler and 5-10 parts of a curing agent, wherein the conductive filler is selected from any one or more of metal particles, metal oxide, a fiber material, a carbon-based material, a polythiophene polymer and a mica material with a metal layer on the surface. According to the conductive backboard, the composition of the conductive material in the conductive layer is optimized, so that the conductive layer has good ductility, is better matched with the thermal performance of a polymer and is better compounded with the supporting layer, and the conductive performance, the mechanical strength and the weather resistance of the conductive backboard are improved, so that the photoelectric conversion efficiency of a photovoltaic module is improved.

The invention discloses a modified electrode with a unique nano structure, a preparation method of the modified electrode and application of the modified electrode in an aqueous organic flow battery, and relates to the technical field of flow batteries. The preparation method comprises the following steps: pretreating a carbon-based material, and dipping the pretreated carbon-based material in a preheated metal organic framework material solution; efficient mixed loading of the carbon-based material and the metal organic framework material is realized through ultrasonic action, and then the aqueous organic flow battery electrode is obtained through a multi-stage thermal management process and treatment. The surface of the carbon-based material is finely modified through the metal organic framework material, so that metal atoms can be uniformly distributed and serve as electrochemical active sites, and compared with an original carbon-based material, the electrode has better catalytic performance and electrochemical performance on organic active electrolyte, and the electrochemical performance of the electrode is better than that of the original carbon-based material. And moreover, the rate characteristic, the energy efficiency and the utilization rate of the electrolyte are improved, and a solution is provided for the efficient and long-life aqueous organic flow battery.

A method for enhancing the anaerobic digestion of sludge to efficiently produce methane, which method aims to solve the existing technical problems of low anaerobic fermentation efficiency of sludge, a low utilization value of non-grain biomass, poor efficiency of a carbon material, etc. The present method comprises the main steps of: 1, a sludge pretreatment; 2, preparation of a carbon-based material; 3, an electrochemical pretreatment; 4, anaerobic fermentation; and 5, a subsequent treatment. In the present invention, a porous multi-pole carbon-based material is prepared by blending sludge and straw. Therefore, the non-grain biomass is fully utilized, making the high added value thereof increased; moreover, the produced carbon-based material can also enhance the electrochemical pretreatment and increase methane produced by anaerobic fermentation.

The invention provides a high-capacity silicon-carbon composite negative electrode material and a preparation method thereof, and relates to the technical field of battery materials, the high-capacity silicon-carbon composite negative electrode material comprises the following components by mass: 20-50 parts of silicon-based particles, 3-8 parts of an interface modification layer, and 45-75 parts of a carbon matrix; the silicon-based particles are nano silicon; the interface modification layer is oxide or nitride and coats the surfaces of the silicon-based particles; the carbon substrate is prepared from 20 to 40 parts of graphite, 15 to 25 parts of amorphous carbon and 5 to 10 parts of carbon nanotubes; through the three-layer structure of the silicon-based particles, the interface modification layer and the carbon substrate, the cooperation of high capacity and high stability is realized, and the nano silicon-based particles give full play to the advantage of high capacity, so that the first discharge specific capacity of the material is higher; the interface modification layer reduces interface impedance of silicon and carbon and inhibits side reaction of silicon and electrolyte; the three-dimensional network of the carbon matrix not only reduces the electrode impedance, but also provides buffering for silicon volume expansion, and is obviously superior to the traditional graphite and the existing silicon-carbon negative electrode.

The invention discloses a flexible graphene heat-conducting film and a preparation method thereof.The graphene heat-conducting film is obtained by carbonizing, graphitizing and treating a graphene oxide film, the graphene oxide film is prepared by coating and drying slurry, and the slurry comprises a solvent, graphene oxide and a carbon-based additive; the carbon-based additive comprises any one of carbon nanotubes, carbon black or carbon fibers. The carbon-based material and the graphite are introduced for in-situ / oriented oxidation, so that the oxidation process can be promoted, a novel structure in which the carbon-based material and the graphite are connected through chemical bonds is formed, oriented arrangement of molecules in the film forming process is facilitated, and the flexibility of the graphene heat-conducting film is improved; in addition, a certain proportion of carbon-based material is only introduced in the premixing stage, so that the performance of the film is improved, the processing cost is not greatly increased, the process is mature, and mass production can be realized.

The invention relates to the technical field of electrodes for vanadium batteries, in particular to a preparation method of a catalytically active electrode for a vanadium battery, the catalytically active electrode and application of the catalytically active electrode. The preparation method comprises the following steps: loading a bismuth oxide water-phase dispersion liquid as a precursor on the surface of a graphite felt electrode substrate, placing the graphite felt electrode in an inert atmosphere to carry out a carbon thermal reduction reaction, and carrying out a solid-phase reaction on bismuth oxide and the graphite felt carbon substrate in the inert atmosphere to generate a strongly combined catalytic active site in situ. By pertinently controlling the concentration of the bismuth oxide water-phase dispersion liquid and the temperature of the carbon thermal reduction reaction, active components in the prepared catalytic active electrode for the vanadium battery are uniformly and firmly combined on the surface of a matrix, and high uniformity and high stability are shown. And meanwhile, a loading-first and one-step carbon thermal reduction method is adopted, so that large-scale production can be realized, the electrochemical activity of the product is effectively improved, the uniformity and consistency of the performance can be realized, and the multi-dimensional strict requirements of commercial production on the electrode performance and the manufacturing efficiency are effectively met.

The present invention relates to a negative electrode for an all-solid-state battery, an all-solid-state battery including same, and a method for manufacturing an all-solid-state battery. More specifically, the negative electrode for an all-solid-state battery includes a positive electrode layer, a negative electrode layer, and a solid electrolyte layer disposed between the positive electrode layer and the negative electrode layer, wherein the negative electrode layer includes a negative electrode current collector, a first coating layer on the negative electrode current collector, and a second coating layer on the first coating layer. The first coating layer includes a first carbon-based material, a first metal, and a first binder, and the second coating layer includes a second carbon-based material, a second metal, and a second binder. The first binder includes a rubber-based binder, while the second binder includes a non-rubber-based binder.

A method is provided for modifying a via from a PCB including a plurality of subassemblies comprising a plurality of layers. The method may include drilling a via of the PCB to form a through-hole to remove an unwanted material in the via of the PCB. The method may also include depositing a carbon-based material over an inner wall of the through-hole. The method may further include back drilling a first portion of the through-hole by a drill from the top of the PCB to form a first blind via. The method may also include selectively plating a conductive material over the carbon-based material to form a plated through-hole.

Disclosed are positive electrodes, rechargeable lithium batteries including the positive electrode, and methods of manufacturing the positive electrode. The positive electrode includes a current collector and a positive electrode active material layer on the current collector. The positive electrode active material layer comprises a first positive electrode active material that comprises lithium-nickel-based composite oxide and has a bare form without a carbon coating on a surface thereof, a second positive electrode active material that comprises lithium-nickel-based composite oxide and has a core and a carbon coating layer on the core, a conductive material that comprises a carbon-based material, and a binder.

An anode active material according to an example of the present disclosure comprises: a first active material comprising a silicon-based material; and a second active material comprising a carbon-based material, wherein the second active material comprises at least one of the first carbon-based material and the second carbon-based material, and an expansion rate over the total length or an expansion rate over the total width of an anode comprising the anode active material satisfying the following equation 3: a1 = k1 * x / y a2 = k2 * x / y , where a1 denotes the expansion rate over the total length, a2 denotes the expansion rate over the total width, k1 and k2 denote real numbers, and x denotes a weight of the first carbon-based material and y denotes a weight of the second carbon-based material.

The present invention relates to a negative electrode for an all solid-state battery and an all solid-state battery including same. The negative electrode comprises: a current collector; a first layer positioned on the current collector and including a Si-C composite; and a second layer positioned on the first layer and including a carbon-based material and a metal, wherein the all solid-state battery has a ratio (N / P ratio) of negative electrode capacity / positive electrode capacity of 0.5 to 2.